Often, I find when graphing classes in the CLIM-LISTENER, that I will run off the window size. The reason is that neither the class-grapher, which invokes format-graph-from-roots, nor format-graph-from-roots, calls change-space-requirement on its stream. I'm not at all sure what's the proper fix. It seems to me that Format-graph-from-roots should call change-space-requirements, because I can't imagine a case where one wouldn't want to after drawing a graph. But I recall raising this issue on #lisp one day, and having people argue that they preferred NOT to have anything automatically call change-space-requirements, that this should be left to the programmer, in the interests of efficiency, so that that programmer could bundle up a large number of window writes before updating the space requirements. So, what's the consensus of the group? Where should this be fixed? Robert